Method and apparatus for controlling radial disk displacement in Winchester disk drives
US4754351A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1985 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1473
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a Winchester hard disk drive assembly having at least one disk rotatably disposed on a cylindrical spindle, the improvement compromising spacer means interposed between the inner diameter of said at least one disk and the outer diameter of said cylindrical spindle, said spacer means defining a clearance between said at least one disk and said spindle and adhesive means for adhesively securing said spacer means between said spindle, and said at least one disk, whereby a substantially uniform and contiguous clearance is maintained about the circumference of the spindle upon thermally induced differential expansion of the disk, and whereby said disk will be substantially prevented from abutting the outer circumferential wall of the spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.